Пĕрчĕсене трансформацилени
Пĕрчĕсене трансформацилени — пĕрчĕсен пĕр тытăмĕнчен вĕсен тепĕр тытăмĕ патне куçни.

Вуламалли 
 How Many? A dictionary of units of measurement 
 
 NIST Guide to SI Units Many conversion factors listed.
 Online Unit Conversion Website Convert any unit from and to other units.
 The Unified Code for Units of Measure
 Units, Symbols, and Conversions XML Dictionary
 Units, Symbols, Exchange, Equations, Human Readable

Каçăсем 

 
NIST Guide to SI Units Many conversion factors listed.
The Unified Code for Units of Measure
Units, Symbols, and Conversions XML Dictionary 

 
Mетрологи
Виçев